Crack filling tool



FIG. 1 is a front elevational view thereof, with the rear elevational view being a mirror image thereof;

FIG. 2 is a right side elevational view with the left side being a mirror image thereof;

FIG. 3 is a bottom view thereof; and,

FIG. 4 is a top view thereof. 

The ornamental design for a crack filling tool, as shown and described. 